This file was provided to Wikimedia Commons by the Bulgarian Archives State Agency as part of a cooperation project. The Bulgarian Archives State Agency provides images, which are public domain. For attribution/citation of the source, Bulgarian Archives State Agency, please use the identification numbers of the document's fonds, inventory, archival unit and sheet.

This image (or other media file) is in the public domain because its copyright has expired and its author is anonymous.This applies to the European Union and those countries with a copyright term of 70 years after the work was made available to the public and the author never disclosed their identity.Important: Always mention where the image comes from, as far as possible, and make sure the author never claimed authorship.

Note: In Germany and possibly other countries, certain anonymous works published before July 1, 1995 are copyrighted until 70 years after the death of the author. See Aktuelle Rechtslage in Deutschland, last paragraph. Please use this template only if the author never claimed authorship or his/her authorship never became public in any other way. If the work is anonymous or pseudonymous (e.g., published only under a corporate or organization's name), use this template for images published more than 70 years ago.For a work made available to the public in the United Kingdom, please use Template:PD-UK-unknown instead.